In the United States it is illegal (almost everywhere) to ride between lanes of traffic at any speed. That is a law I break almost every time I am on a motorcycle. The only way to hit a pedestrian in that situation is if they are walking between lanes of traffic. I typically do it at stop signs and lights where I stop between two rows of cars so if one gets rear ended I am not the one that gets obliterated.

I will treat a traffic light as a stop sign if it does not detect my bike, which is common. I won't wait for a car to hopefully stop behind me without killing me. I do this at intersections I am familiar with. This is technically legal if you do it a certain way but I often don't wait that long to minimize my risk.

I'm not taking a motorized vehicle down a sidewalk at any speed. I will ride my bicycle on a sidewalk along busy streets if there is minimal pedestrian presence and no alternate route. When a conflict with a pedestrian presents itself I move back to the road if possible.

There are also legal things I do that are often perceived as illegal such as riding with my high beams on during the day or skipping ferry lines. If I get flashed by oncoming traffic they may be mad at me but at least I know they saw me.